Explosive-engine.



No. 679,4!0. Patented July- 30, |90I. E. T. BIRDSALL.

EXPLUSIVE ENGINE.

(Application tiled Aug. 3, 1900.)

(Nn Modal.)

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e' C' l ,i i i A J E v l UTTED STATES PATENT OEEICE. i

EDXVAR'D T. BIRDSALL, OF NEW ROCHELLE, NEW YORK, ASSIGNOR TO DESBERON MOTOR-OAR CO., OF NEV YORK, N. Y.

EXPLOSlVE-ENGINE.

SPECIFICATION forming part of Letters Patent NO. 679,410, dated July 30, 1901.

Application filed August 3, 1900. Serial No. 25,782. (No modul.)

To all whom t may concern:

Be it known that I, EDWARD T. BIRDSALL, a citizen of the United States, residing at New Rochelle, in the county of lVestchester and State of New York, have made a new and useful Invention in Explosive-Engines, of which the following is a specification.

My invention has for its object to provide means for more effectually cooling the parts of explosive-engines which usually become heated from the effect of the explosion of the gases therein and will be understood by referring to the accompanying drawing, which is a vertical sectional view of an explosive-engine embodying my improvement, the piston, piston-rod, and valves and their supporting valve-rods being shown in elevational view.

Prior to my invention it has been the custom to provide explosive-engines with radiallydisposed gills around the body of the cylinder and the explosion-chamber, thus giving to them a relatively large heat-radiating capacity. It is found, however, by experience that even with the best disposition or arrangement of such heat-radiating gills it is not possible to keep the cylinder and the explosion-chamber sufficiently cool to effectually operate the engine, it being often necessary, as I have ascertained in connection with automobile-engines, to stop the engine for a sufficient time to allow it to cool. It is also old to cool explosive-engines through the combined effect of heat radiating gills about the cylinder and a circulating water-jacket around the explosion-chamber.

My improvement consists in so combining these features that the circulating water in the water-jacket not only cools the explosionchamber, but also the valves, valve-seats, and a large portion of the cylinder immediately adjacent to said chamber.

Referring now to the drawing in detail for a full and clear understanding of the invention, such as will enable others skilled in the art to construct and use the same, O represents the cylinder of an explosive-engine, having cast integral with the greater portion of the outer surface thereof heat-radiating gills g g, said cylinder being secured in the usual manner to a standard or base f. The upper portion of this cylinder is turned down in a lathe with extreme accuracy to a point above the upper gill f, so as leave a shoulder t.

R is the piston-rod, I the piston, and m m the usual form of packing-rings therefor.

E is the explosion-chamber, and A the water-jacket therefor, said water-jacket and eX- plosion-chamber being cast in one integral piece and in such manner that there is afforded a compound water-chamber W W W2, eX- tending around the explosion-chamberclosely adjacent to the valves and also entirely around the upper portion of the cylinder C when in position resting upon the shoulder t.

t' is the inlet, and o the outlet, of the waterjacket, and t" is the inlet, and c the exhaust, for the gas or explosive agent, s being an iulet for the sparking plug or igniting device, all of said inlets being screw-threaded, as shown, for receiving the usual attachments and in the usual manner.

o 'v' are the usual spring-seated inlet and exhaust valves, the former secured in a detachable seat and both provided with the usual valve-rods and springs, as shown.

By providing the compound water-chamber W WV W2, which serves the function of cooling the explosion-chamber, the valves, valveseats, and that end of the cylinder Cadjacent thereto, I am enabled to operate successfully an explosive-engine under all conditions of usage, and particularly in connection with automobiles or motor-cars, where it is especially desirable that the engine should be kept at the lowest possible temperature.

l do not limit my improvement to the especial details of arrangement herein shown. I believe it is broadly new with me to provide an explosive-engine with a water-jacket having a compound water-chamber which serves the multiple function of cooling the valves, the explosion-chamber, and that portion of the cylinder adjacent thereto, and my claims are generic as to this feature.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. An explosive-engine having a cylinder provided with heat-radiating gills; in combination with an explosion-chamber provided with a compound water-chamber surrounding the explosion-chamber' and one end only of IOO the cylinder, the junction between said compound water-chamber and cylinder being effected by slipping the former over the latter in substantially the manner shown.

2. AnV explosive-engine having a cylinder provided with heat-radiating gills over a portion of its length; in combination with an explosion-chamber adapted to tit snugly over the remaining portion thereof and provided with a compound water-chamber which surrounds the explosion-chamber and one end only of lthe cylinder, the lower end o f said compound water-chamber resting against a shoulder on the outside of the cylinder and adjacent to one of the heat-radiating gills, the arrangement being such that an absolutely-tight joint is effected between the two under all conditions of usage, substantially as shown and described.

3. An explosive-engine having a cylinder; in combination with an eXplosionchamber provided with a compound water-chamber which fits snugly around one end of the cylinder so as to form an absolutely-tight joint between the two, one branch W of the compound water-chamber being located between the valves and the cylinder, substantially as shown and described.

4. An explosive-engine provided with an explosion-chamber cast integral with a com-v pound water chamber and adapted to fit snugly over one end of the cylinder of the engine in such manner that the circulating water cools both the cylinder and the eXplosion-chamber, one branch of the compound water-chamber being located between the cylinder and the valves of the engine; said compound water-chamber and explosion-chamber being cast integral and located, when in position, with its lower end against a ledge or shoulder on the outside of the cylinder, substantially as shown and described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWARD T. BIRDSALL.

Witnesses: C. J. KINTNER, M. F. KEATING. 

